From 0adf24074a859482166b73c2fed33ae8ea10d063 Mon Sep 17 00:00:00 2001
From: kenneth <1185230223@qq.com>
Date: Mon, 7 Apr 2025 10:53:35 +0800
Subject: [PATCH] add some methods

---
 util.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/util.go b/util.go
index a648f14..ec132b3 100644
--- a/util.go
+++ b/util.go
@@ -42,6 +42,16 @@ func EndOfDayStr(f ...string) string {
 	return EndOfDay().Format(time.DateTime)
 }
 
+// GetPreviousDay 获取指定日期的前一天
+func GetPreviousDay(t time.Time) time.Time {
+	return t.AddDate(0, 0, -1)
+}
+
+// GetNextDay 获取指定日期的下一天
+func GetNextDay(t time.Time) time.Time {
+	return t.AddDate(0, 0, 1)
+}
+
 // =====================================================================================================================
 // 周
 
@@ -312,3 +322,8 @@ func GetDatesInRange(start, end time.Time) []time.Time {
 func DayOfYear(t time.Time) int {
 	return t.YearDay()
 }
+
+// InDuration 判断指定时间是否在指定时间段内
+func InDuration(t, start, end time.Time) bool {
+	return t.After(start) && t.Before(end)
+}